Improvement in elevators



NJEIERS, PNOTO-LITHOGRAPNER, WASHINGTON, I7, G,

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THOMAS B. S"1MONTON,FINEW YORK, N. Y.

Letters Patent No. 84,385, dated November` 24, 1868.

IMPROVEMENT :EN- ELEVATORS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concer-n Be it known that I, THOMAS B. Srtronrox, of the city, county, and State of New York, have invented a new and useful Improvement in Elevators; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

Figure 1 is a rear view of my improved elevator, parts of the frame-work being broken away to show the construction.

Figure 2 is a detail view of the scroll-wheel.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved elevator, for use in warehouses, stores, maimfactories, 85e., which shall be simple in construction, convenient'and safe in use, and unlimited in power; and

It consists in the construction and combination of the 'various' parts of the apparatus, as hereinafter more fully described;

A represents the frame-work of the hoist-way, upon the central side-posts of which are formed ways B, upon which the movable parts of the apparatus slide up and down.

C are vertical guide-bars, which slide up and down upon the Ways B, and to the upper ends`of which are pivoted the ends of the shaft D, to which are attached the large grooved wheels vor pulleys E, having a smaller set of pulleys, F, formed upon or attached to their sides.

G is a shaft, the ends of which are attached to small circular plates H, which are securely and rigidly connected with the lower parts of the sliding bars C by the supports I, in such away that the upper parts of said plates H may incline inward, or towards each other, as shown in iig. l.

J are two pulleys or wheels, which work loosely upon the shaft G, and are held in an inclined position by resting against the plates H.

Upon the outer side of the pulleys or wheels J are formed scroll-anges-K, the part of which thatA is at the lower part of the said wheels enters the teeth or notches of the racks L, attached to the ways B, the` part of said ange at the upper part of said wheels being held away from said racks by the inclined position of said wheels.

The end of the flanges K overlap each other, as shown in iig. 2, so that the forward end of said flange may enter the next notch of the rack L, before the rear end of said flange has left the notch, through which the said flange has been passing. If desired, small iction-rollers may be pivoted to the racks L, against which the ange K may bear, so as to change the friction from a sliding to a rolling friction, and thus diminish its amount.

The wheels J are connected with the pulleys F by the belt oi'chain M, so that the said scroll-wheels J maybe revolved to raise and lower the apparatus by the revolution of the wheels or pulleys E F.

N is the platform, which is secured to the shaft G, and is further supported and braced from the shaft D by the brace and supporting-bars or chains O.

P are pulleys, pivoted to suitable supports in the upper part of the building, over one side of the hoistway; and

Q are pulleys pivoted in the cellar or lower' part of the building.

The two pulleys Q are connected and made to move together bythe belt R, which passes around the pulleys S, formed upon or attached to the sides of the said pulleys Q.

The journal of one ofthe pulleys Q may be extended, and may have a pulley or crank attached to it for the application of power to the apparatus.

'l are endless ropes, belts, or chains, which are passed one or more times around the pulleys Q, to prevent the` said bands ,l from slipping upon the said pulleys Q.

The belts ',l pass from the pulleys Q to and around the pulleys or wheels F, and thence around the upper guide-pulleys P, and back to thcpulleys Q.

By this construction and arrangement, should the power be checked at any point of the hoist-way, either purposely or accidentally, the apparatus will remain stationary, andwill not run down, so that. accidents from this cause Vare effectually guarded against.

It will be observed that the entire apparatus, with theexeeption ofthe guidepulleys at the top and bottom ofthe hoist-way, move up and down with the platform, thus economizing space.

Having thus described my invent-ion,

I claim as new, and desirefto secure by Letters Patentl v 1. The. combination of the scroll-wheels J K, the plattbrm-shaft G, inclined plates H, and racks L, substantially as herein shown and described, and for the purpose set forth.

2. The combination and arrangement o'f the racks L, inclined plates H, flanged or scroll-wheels or vpulleys J K, shaft G, platform N, band or chains M, pulleys E and F, shaft D, sliding guide-bars C, ways B, endless bands T, and guide-pulleysP Q, pulleys S, and band R, with each other, substantially as Aherein 'shown and described, and for the purpose set forth.

3. The arrangement of the mechanism, by means of which all the operating parts of the hoisting-apparatus may be raised and lowered with the platform, substantially as herein shown and described.

The above specification of my invention signed by me, this 7th day of September, 1868.

THOS. B. SIMONTON.

Witnesses: K

ALEX. F. ROBERTS,

JAMES T. GRAHAM. 

